<template>
    <div class="login-container">
        <!-- 登录表单 -->
        <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">
            <div class="title-container">
                <div class="title-cn">管理服务系统</div>
                <div class="title-en">Management service system</div>
            </div>
            <!-- 用户名 -->
            <el-form-item prop="username">
                <span class="svg-container">
                    <svg-icon icon-class="user" />
                </span>
                <el-input ref="username" v-model="loginForm.username" placeholder="Username" name="username" type="text" tabindex="1" auto-complete="on" />
            </el-form-item>
            <!-- 密码 -->
            <el-form-item prop="password">
                <span class="svg-container">
                    <svg-icon icon-class="password" />
                </span>
                <el-input
                    :key="passwordType"
                    ref="password"
                    v-model="loginForm.password"
                    :type="passwordType"
                    placeholder="Password"
                    name="password"
                    tabindex="2"
                    auto-complete="on"
                    @keyup.enter.native="handleLogin"
                />
                <span class="show-pwd" @click="showPwd">
                    <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
                </span>
            </el-form-item>
            <!-- 记住密码 -->
            <el-form-item class="switch-userid">
                <el-switch v-model="loginForm.value" active-text="记住密码" active-color="#13ce66" inactive-color="#ff4949" style="float: right" />
            </el-form-item>
            <!-- 登录按钮 -->
            <el-button :loading="loading" class="login-bth" type="primary" style="width: 100%; margin-bottom: 30px" @click.native.prevent="handleLogin">
                登录
            </el-button>
            <!-- 提示 -->
            <div class="tips">
                <span style="margin-right: 20px">username: admin</span>
                <span>password: admin</span>
            </div>
        </el-form>
    </div>
</template>

<script>
import { validateUsername, validatePassword } from '@/utils/validate'
import { mapActions } from 'vuex'

export default {
    data() {
        return {
            loginForm: {
                username: 'admin',
                password: 'admin',
                value: false
            },
            // 前台表单验证
            loginRules: {
                username: [{ required: true, trigger: 'blur', message: '用户名不能为空' }, { validator: validateUsername }],
                password: [{ required: true, trigger: 'blur', message: '密码不能为空' }, { validator: validatePassword }]
            },
            loading: false, // 登录按钮loading效果开关
            passwordType: 'password',
            redirect: undefined
        }
    },
    watch: {
        $route: {
            handler: route => {
                this.redirect = route.query && route.query.redirect
            },
            immediate: true
        }
    },
    methods: {
        ...mapActions(['user/VueXLogin']),
        showPwd() {
            if (this.passwordType === 'password') {
                this.passwordType = ''
            } else {
                this.passwordType = 'password'
            }
            this.$nextTick(() => {
                this.$refs.password.focus()
            })
        },
        async handleLogin() {
            this.$refs.loginForm.validate(async valid => {
                if (valid) {
                    try {
                        this.loading = true
                        // 调用方法实现登录(使用Vuex actions 进行异步调用执行)
                        await this['user/VueXLogin']({ username: this.loginForm.username, userpass: this.loginForm.password })
                        this.$router.push('/')
                    } catch (error) {
                        console.log('handleLoginError', error)
                    } finally {
                        this.loading = false
                    }
                } else {
                    console.log('error submit!!')
                    return false
                }
            })
        }
    }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg: #283443;
$light_gray: #fff; // 输入框文字颜色
$cursor: #fff; // 输入光标颜色

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
    .login-container .el-input input {
        color: $cursor;
    }
}

/* reset element-ui css */
.login-container {
    .el-input {
        display: inline-block;
        height: 47px;
        width: 85%;

        input {
            background: transparent;
            border: 0px;
            -webkit-appearance: none;
            border-radius: 0px;
            padding: 12px 5px 12px 15px;
            color: $light_gray;
            height: 47px;
            caret-color: $cursor;

            &:-webkit-autofill {
                box-shadow: 0 0 0px 1000px $bg inset !important;
                -webkit-text-fill-color: $cursor !important;
            }
        }
    }
    // 背景颜色与边框
    .el-form-item {
        border: 1px solid rgba(255, 255, 255, 0.1);
        background: rgba(0, 0, 0, 0.2);
        border-radius: 5px;
        color: #454545;
    }
    // 错误提示文件
    .el-form-item__error {
        font-size: 14px;
        color: red;
    }
    // 登录按钮
    // .login-bth {
    //   background: #407ffe;
    //   height: 64px;
    //   line-height: 32px;
    //   font-size: 24px;
    // }

    .switch-userid {
        border: none;
        background: none;
    }
}
.el-switch__label {
    color: #c9c9ca;
}
</style>

<style lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;

.login-container {
    min-height: 100%;
    width: 100%;
    background: url(~@/assets/images/login-bg.jpg) center;
    overflow: hidden;

    .login-form {
        position: relative;
        width: 520px;
        max-width: 100%;
        padding: 200px 35px 0;
        margin: 0 auto;
        overflow: hidden;
    }

    .tips {
        font-size: 14px;
        color: #fff;
        margin-bottom: 10px;

        span {
            &:first-of-type {
                margin-right: 16px;
            }
        }
    }

    .svg-container {
        padding: 6px 5px 6px 15px;
        color: $dark_gray;
        vertical-align: middle;
        width: 30px;
        display: inline-block;
    }

    .title-container {
        position: relative;

        .title-cn {
            font-size: 26px;
            color: $light_gray;
            margin: 50px auto 20px auto;
            text-align: center;
            font-weight: bold;
        }
        .title-en {
            font-size: 26px;
            color: $light_gray;
            margin: 20px auto 40px auto;
            text-align: center;
            font-weight: bold;
        }
    }

    .show-pwd {
        position: absolute;
        right: 10px;
        top: 7px;
        font-size: 16px;
        color: $dark_gray;
        cursor: pointer;
        user-select: none;
    }
}
</style>
